Do Long Summer Days Enable Lush Plant Growth in the Arctic?

No.

If you’ve ever visited Northern Europe, you’ve noticed that the fare is more about meat and potatoes than it is the rich salads and vegetable plates of the Mediterranean.  The reason for that is that higher latitudes have less solar irradiation, even in summer, than their lower latitude cousins, regardless of of how many hours of (extremely weak) sunlight they receive.

Below is a photo of the sunshine near the summer solstice in the northern part of Sweden.  Yes, it’s 24 hours a day, but does this seem like an environment in which veggies are going to thrive?